At present ________ of the experiments ________done in labs after the new building has been finished

It’s many years since I saw you last； I _____ you at all.— I wouldn’t have, either, if someone ______ you by the name.

We’ll eat as soon as the meat is done—It has__________to cook for another five minutes

He told me about the news in a voice.

There __________ a teacher and seventy—two students in the classroom.